13680371 has 4 divisors (see below), whose sum is σ = 13712544. Its totient is φ = 13648200.

The previous prime is 13680353. The next prime is 13680383. The reversal of 13680371 is 17308631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17308631 = 89 ⋅194479.

It is a cyclic number.

It is not a de Polignac number, because 13680371 - 2²² = 9486067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13680301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15440 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (3428136).

Almost surely, 2^13680371 is an apocalyptic number.

13680371 is a deficient number, since it is larger than the sum of its proper divisors (32173).

13680371 is an equidigital number, since it uses as much as digits as its factorization.

13680371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32172.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13680371 is about 3698.6985548974. The cubic root of 13680371 is about 239.1659182976.

The spelling of 13680371 in words is "thirteen million, six hundred eighty thousand, three hundred seventy-one".